Roll stand for printing presses



Aug. 18, 1925. 1,550,241

A. J CLJNE ROLL STAND FOR PRINTING PRESSES Filed Oct. 4. 1924 2Sheets-Sheet 1 v-l L I INVENTOR Aug. 18, 1925.

v A. J; CLINE ROLL STAND FOR PRINTING PRESSES 2 Sheets-Sheet 2 FiledOct. 4. 1924 v INVENTCR A ORNEY Patented Aug. 18,1925.

UNITED STATES-PATENT OFFICE.

I ALLAN J. onus, on onIcAeo. ILLINOIS, AssIsNo-nrb oLInn nLEcria o'uenuraoroams, COMPANY, or CHICAGO, ILLINOIS, A conronnrron or rumors.

' ROLL s'rann Fon rnm'irme rnEssEs.

Application filed October 4, 1924. Serial No. 741,528.

ing had ,to the accompanying drawings,

' forming part thereof.

In high-speed presses, particularly those used in the printingiol'newspapers, it is desirable that the web of paper fed into the pressshall be handled in such a manner as to minimize stoppages of the.press'and interruption in the feeding of the] paper,

due to breakage of the web, exhausting of a roll f paper or,othercauses. Asis well known, the rolls of paper used with such presses eachweigh'about a ton and the web'of paper'is fed therefrom into' the.

press at the rate -of 1200' feet a minute, more or less. Q It is thepresent practice to provide printing'presses with roll stands or devicesforholding a plurality of the large .rolls ,of paper, the web beingtakenfrom one roll until that roll is substantially exhausted,

rotated sufliciently to bring :a fresh roll into operating. position;thereupon the web of the new roll is pasted to the expiring web, the newweb being then drawn by the press and the old web being severed back ofthe pointof pasting. The stub of the expired roll is then removed and afresh ro inserted in its place. With this apparatus it is thepractice tomake what is known as. a flying pastel, which is t 'e joining of the'newweb to the old web automatically without entirely stopping the press, sothat the turning out of an edition is practically continuous. VlTiththis ap-- paratus the degree of tension upon the web .whichthe press isdrawing t5 itself from the roll is controlled by a traveling belt drivenby the same power. which drives the press, the belt speed being slightlyless than the s eed of the web of pa er.

elt is a relativelyls ort endless belt carried upon a pair of pulleysmounted at T either end of a frame-work pivoted at its" upperend andhanging downward so that the belt restsiagainst the roll of paper fromwhich the web'is being drawn by the press;

This travel the roll travels in the same direction, asthe roll and, asabove noted, at a shghtl less speed. The belt, therefore, acts as -ajbupon the roll so asto measurably afiect and The surface of the beltcontacting with rake control the momentum of the heavy roll of paperwhen the-press is. slowed down- ,or stoppedso as to, minimizethepossibilityof flooding the press with paper frq'mfithe .1111- controlledand rapidly rotating roll,

With this arrangement, the angular position of the belt frame varies asthe paper on ,the roll is Withdrawn 'andthe'diamet-er of the'rolldiminishes, gravity compelling the belt audits frame to follow thediminishing roll of paper. The presencefiofthe.

belt surface acts as a background against which the new roll of papermay press the expiring web in the makin pas'ter referred to. Inanticlpation of sac paster the front edgeof the new roll is tact withthe expiring web and against the traveling gait, the friction betweenthe ex issufiicient to cause the new IOH'I'D start rotating and bringthe flap of-such new $011 whereupon the supporting mechanism is withitsadhesive into [contact with the expiring weby being pressed,.,intocontact. therewith and adhering thereto. whereupon given an applicationof an adhesive so that when it. is swung by its frame. intoconp1ringwbifind the surfacefofthe new roll 7.

the press draws the web from the new roll with A the expiring web, thelatter being severed by the attendant back of the joint. This flyingpasterri's made with the press running at reduced speed, but withoutstopping. The travelin belt is not essential to the making of ayin'gpaster, it serving merely to give an added backing. against whichthe fresh roll can press in effecting the joining with the expiring web.

My present invention has as its ob ect the discarding of atraveling-belt and the substitution therefor of a stationary apron andto associate therewith means for regulating the tension imposed uponsuch apron so that one degree of contact may be" secured for normaloperation and a difierentand greater pressure impose when he press isabruptly stopped for any reason, isespecially' desirable to preventflooding the I press with an excess of paper. y

I have shown the preferred form of my invention in the accompany ngdrawings, in which like parts are given similar referonce numerals andin which Fig. 1 illustrates a side view of my stand equipped with threeaprons; Fig. 2 is an end view of my stand showing an apron in contactwith the roll of paper from which the web is being drawn by the press,the apron being given the desired tension by the application of asuitable weight; Fig. 3 illustrates an end view of a portion of my rollstand and the working roll of paper, in connection with my apron,suitable tension upon which is imposed by springs; Fig. 4 is a side viewof my device with three aprons, spring controlled; Fig. 5 is one form ofautomatically controlled tension device for my aprons and Fig. 6 is amodification thereof.

In general it may be pointed out that my roll stand comprises a rotaryshaft '1 carried by end supports 2 and equipped with triplearm devices 3adapted to engage the ends of rolls of paper 4: by suitable means 5, theposition of which is controlled by hand devices 6. The angular positionof the arms 3 is controlled by an electric motor 7 co-opcrating bysuitable means with the large gear 7. The adjustment of the margin ofthe printed paper is secured through the control of an electric motor 8which serves to move the shaft 1 back and forth in its bearings 2.

In Fig. 2 the web 4 is shown as going to press from the lower right-handroll of paper 4, against the outer surface of which presses a stationarybelt or apron 9 supported at its upper end by the rod 10 held inbearings 11. The lower ends of aprons 9 are secured to the cross-rod 13,to which are attached suitable weights for imposing the desired forciblecontact of the aprons against the roll. It will be seen that thelessening diameter of the roll, due to the withdrawal of papertherefrom, is accompanied by a decreased angle for the apron, thusautomatically reducing the force of contact as the necessity forretarding efi'ect diminishes. As shown in Figs. 3 to 6, I can substitutefor the weights 12 the springs 14 which are attachable to the crossbarl3 and suitable stationary supports as 15. I also prefer to interposebetween the ends of the aprons and the cross-bar 13 smaller springs 16tending to make uniform the tension on the several aprons and tocompensate for or accommodate the irregularities of contour of the rollsof paper, all tending to increased efficiency of operation.

Where the press is running at substanially constant speed, only alimited tension is required upon the aprons, but when the press issuddenly stopped or made to run.

more slowly the tendency is for the roll of paper to keep on unrollingat its existing speed with consequent danger of flooding the press withtoo much paper. I obviate this possible difficulty by automatic devices,

forms of which are illustrated in Figs. 5 and 6. In Fig. 5 the heavysprings 1d are attached to the pivoted lever arm 17 which is held in anormally operating position by the latch 20. The latch 20 is controlledby a solenoid 21 actuated when the speed of the press is suddenlylowered, at which time the weight 19 upon the lever 17 causes the leverto be depressed, thusautomatically extending the springs 14 and 16 andimposing the necessary braking force upon the surface of the rotatingroll. The precise electrical connections for the solenoid are not shownin the drawings as those familiar with this art know that the pushing ofan emergency button on the press actuates switches for opening the maincircuit to the press-driving motor and at the same time act to bringinto play some braking device. For example, in one well-known system thepressing of the emergency button actuates a solenoid which opens themain motor circuit and at the same time short-circuits the armature andseries field-coils of such motor through an appropriate resistance,converting such motor into a dynamic brake. In Fig. 5 it is to beunderstood that the solenoid 21 is so connected through such emergencybutton circuit as to be actuated as the driving motor is cut off any oneof several well-known connections may be used. Fig. 6 shows amodification of this arrangement, the latch 20 having substituted for itthe plunger 93 hooked to the lever 17 by suitable means, as the link 24,the plunger 23 being drawn down by the solenoid 22 actuated in time ofemergency by suitable controlling switches, not shown; the drawing downof the lever 17 by the solenoid 22 results in an extension of springs 14and 16, thus imposing the required additional strain by the aprons 9,tending to stop furtherrotation of the roll of paper. Inthis-application I am not including claims covering the above describedautomatic devices, such claims appearing in a divisional applicationhereof, Serial No. 15,207, filed March 13, 1925.

I claim as my invention the following:

1. A roll-stand for printing presses comprising a rotatable supportingmember for a plurality of rolls of paper, means for adjusting theposition of such member, aprons supported from abovethe roll from whichthe wel.) is withdrawn by the press and held under tension against thesurface thereof and serving as a retarding device for such roll tomaintain the web taut and also, providing a. backing against which a newroll may be made to press the web of an expiring roll when making aflying paster.

2. A roll-stand for printing presses comprising a rotatable supportingmember for a plurality of rolls of paper, means for adjusting theposition of such member for margin and web-feed, aprons supported fromabove the roll from which the web is withdrawn by the press and heldunder tension against the surface thereof and serv- 'ing as a retarding,device to maintain the Web taut and also providing a backing againstwhich a new roll may be made to press the web of an expiring roll whenmaking a flying paster.

'3. A roll-stand for printing presses comprising arotatable supportingmember for a plurality of rolls of paper, means; for adjusting theposition of such member, aprons supported from above the roll from whichthe Web is withdrawn by the press, and spring tension devices secured tosuch aprons and serving to hold the aprons in frictional contact withthe surface of such roll.

4. A roll stand for printing presses comprising a rotatable supportingmember for a plurality of rolls of paper, means for adjusting theposition of such member, a plurality of aprons supported from above theactive roll and on the side of the roll stand toward which the reel ismoved in bringing a fresh roll into operating position, such apronsservinglto hold the traveling web unplurality of rolls of paper, meansfor adjusting the position of such member, aprons supported from abovethe roll from which the web is withdrawn by the press and means forapplying tension to such aprons comprising a transverse bar to which thelower ends of all the aprons are spring connected and additional tensiondevices secured to such bar and serving to maintain contact between theaprons and the roll of paper from which the web is drawn into the press.

ALLAN 'J. CLINE.

